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INDONESIA
Journal of Applied Geospatial Information
Published by Politeknik Negeri Batam
ISSN : -     EISSN : 25793608     DOI : -
Core Subject : Science, Social, Engineering,
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science Physics
Journal of Applied Geospatial Information (JAGI) is a national and international peer review journal published by Politeknik Negeri Batam. The JAGI is issued 2 times a year in electronic form, publishes Original Research Articles (full papers and short communications) and Review (full and mini reviews) in all aspects of result research in the field of science/engineering: terrestrial and marine (geomatics, geophysics, geography, geology, geographic information systems, remote sensing, cartography, oceanography, hydrography, marine science and technology).
Arjuna Subject : -
Articles 183 Documents
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The Relationship Between Morphology, Morphogenesis and Morphotectonics Potential for Flood Disasters in the Karanggayam Area, Kebumen Regency, Indonesia Retongga, Nofrohu; Razi, Muhammad Haikal
Journal of Applied Geospatial Information Vol. 8 No. 2 (2024): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v8i2.7710

Abstract

The Regional Disaster Management Agency (BPBD) of Kebumen Regency recorded that from 2011 to 2020 there were 1,335 disaster events, 154 (11.5%) of which were flood disasters. There were eight flood disasters in Karanggayam District were 8 incidents. This research method consists of four stages: literature study, field observation and mapping, analysis of morphology, morphogenesis, and morphotectonics, and analysis of the relationship between morphology, morphogenesis, morphotectonics, and flood potential. The potential for flood disasters is related to the morphological aspects, morphogenesis, and morphotectonics as controlling factors for flood disasters in the research area. Based on the potential for flood disasters in the research area, it is necessary to carry out non-structural mitigation in the research area. Appropriate nonstructural mitigation of flood disasters based on field facts, such as installing an early warning system for flood disasters, having evacuation routes and signs pointing to evacuation routes, socializing flood disasters, and installing warning boards in areas prone to flood disasters to minimize the risk of flood disasters in the Karanggayam area.
Microwave Absorption Analysis of Barium Hexaferite And Iron Sand Yeni P. S. Naibaho; Syahrul Humaidi; Martha Rianna; Linda E. Diana
Journal of Applied Geospatial Information Vol 8 No 1 (2024): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v8i1.7732

Abstract

The goal of this study is to investigate the properties of barium hexaferrite and iron sand as microwave absorbers. The focus is on understanding how these materials affect microwave absorption and the specific frequency range of waves they produce. The solid reaction method was used in the study. The study's findings indicate that the combination of iron sand with barium hexaferrite material leads to the formation of a homogeneous material with a single phase. X-ray diffraction pattern data confirms the presence of a single-phase material, specifically iron sand and barium hexaferrite, which consists of hematite and barium hexaferrite. The VNA observations reveal that the iron sand and barium hexapherite materials can absorb electromagnetic waves at a radar wave frequency of 11.1 GHz, resulting in a loss of -23.86 dB. Furthermore, the material demonstrates its ability to absorb microwaves. The absorption of microwaves relies on the quantity of particles in the absorbent substance and its microwave-absorbing capacity. To thoroughly assess the absorption properties of various samples, it is essential to not only evaluate their reflection loss but also analyze how well they operate as microwave absorbers.
Characterization of Iron Sand and Nickel Oxide on Crystal Structure as Microwave Absorbing Material Linda E. Diana; Martha Rianna; Syahwin Syahwin; Yeni P. S. Naibaho
Journal of Applied Geospatial Information Vol 8 No 1 (2024): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v8i1.7733

Abstract

We have carried out a thorough investigation to scrutinize the characteristics of iron sand and nickel oxidizer, focusing on their crystal structure as microwave-absorbing materials. The study investigates the impact of these materials on microwave absorption characteristics and the frequency range of the resulting waves. The solid-state reaction method is used in the research methodology. The research findings indicate that the combination of iron sand and nickel oxide leads to the formation of a homogeneous substance. The X-ray diffraction pattern data reveals the presence of two single-phase materials: iron sand, which consists of hematite, and nickel oxide. The iron sand and nickel oxide materials underwent characterization using EDS, revealing a composition that closely approximated stoichiometry. A Vector Network Analyzer (VNA) test shows that the iron sand and barium hexaferrite mix may be able to effectively absorb electromagnetic waves at a radar frequency of 12 GHz, leading to a -24 decibels (dB) drop.
Evaluation of Coordinate Position Precision Using GNSS NEO SERIES and GSM SIM 7000E Modules Kusuma, Hollanda Arief; Irnawati, Yunita; Aflaha, Fadli Aulia; Baihaque, Muhd. Ridho
Journal of Applied Geospatial Information Vol. 8 No. 2 (2024): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v8i2.7780

Abstract

This study investigates the precision of coordinate positioning using Global Navigation Satellite System (GNSS) technology, focusing on GNSS Neo Series modules and the GSM SIM 7000E module. The research aims to address the lack of comparative studies evaluating these GNSS receivers simultaneously. A field test spanning 24 hours was conducted to collect data on satellite acquisition and Horizontal Dilution of Precision (HDOP). The GNSS systems were deployed in a controlled environment at the Class I Meteorological Station Hang Nadim, Batam. The system developed comprised GNSS modules (Neo 6M, Neo 7M, Neo 8M, and GSM SIM 7000E), an ESP32 microcontroller, Arduino UNO, and a Micro SD shield module. Data processing involved converting coordinates to meters and calculating longitude and latitude errors. Root Mean Square Error (RMSE) analysis and one-way ANOVA were performed to assess accuracy and compare the GNSS receivers. Results indicate that the GSM SIM 7000E demonstrated superior satellite acquisition, leading to higher accuracy in coordinate positioning compared to the Neo Series modules. The study also identified optimal data collection times for accurate dispersion. These findings provide valuable insights into selecting and deploying GNSS receivers, enhancing performance in location-based services and scientific applications.
Sedimentation And Abrasion Identification in Cikidang Fishery Port and Surrounding Coastal Area Muhamad Kemal Idris; Wahyu Adi Setyaningsih; Alimuddin Alimuddin
Journal of Applied Geospatial Information Vol 8 No 1 (2024): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v8i1.7796

Abstract

Cikidang Fishery Port is one of the ports with serious abrasion and sedimentation problems. Seawater abrasion significantly affects some coastal areas that lack breakwater protection. Seawater abrasion causes the shoreline to recede further into the land, thereby narrowing the operational area of the coast. Not only that, harbour areas that are both protected and unprotected by breakwater also experience problems regarding water areas caused by ocean currents, tides, and large waves that lead to sedimentation. Sediment reduces the depth of harbour dock waters, making it impossible for ships to dock. As a fishing port that contributes significantly to the local economy, the Cikidang Fishery Port (CFP) necessitates analysis and solutions to address the issues of sedimentation and abrasion. References for this study used both primary and secondary data. We used a GPS handheld to measure the coastal area, and we conducted comparative studies using satellite images to gather secondary data. This will calculate the effective duration of the dredging process, enabling precise execution and minimizing the associated expenses.
Design of IoT-Based Temperature Monitoring System for Automated Inhomogeneity Measurement Dearninta A. P. Saragih; Kerista Tarigan; Syahrul Humaidi; Muhammad W. Abdulmajid; Bayu Santoso
Journal of Applied Geospatial Information Vol 8 No 1 (2024): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v8i1.7819

Abstract

Badan Meteorologi, Klimatologi, and Geofisika (BMKG): For weather and climate observations, the Meteorology, Climatology, and Geophysics Agency operates 1,285 digital and automated instruments across Indonesia. These instruments need regular calibration as required by Law No. 31 of 2009 on Meteorology, Climatology, and Geophysics. BMKG maintains a calibration laboratorylaboratory in Medan, North Sumatra, complying with ISO/IEC 17025:2017 standards, which ensure the quality of measChamber inhomogeneity, which affects temperature stability, is an important factor in calibration. ibration. To address this, a study designed an IoT-based temperature monitoring system using nine DHT22 sensors to measure chamber temperature inhomogeneity. The IoT system measured an inhomogeneity value of 0.9 0.9 °C, matching standard results using Aqara sensors. The designed system measured inhomogeneity at 0°C through the T6 sensor, while the standard system did so at 2°C with the Aqara 6 sensor, both placed consistently in the upper left rear section. The IoT system improved efficiency, offering real-time monitoring via the ThinkSpeak platform and reducing sampling time to 20 seconds from the standard 30 minutes.
Evaluation of Dissolved Oxygen Concentration in Different Circulation Systems on Water Quality in Fish Pond Winda Y. Yohana; Tulus I. Nasution; Hesti Wahyuningsih; Aprima A. Matondang; Anggi R. Margolang
Journal of Applied Geospatial Information Vol 8 No 1 (2024): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v8i1.7820

Abstract

This study aims to evaluate the impact of different circulation systems on water quality parameters in tilapia rearing. Good water quality is very important in tilapia rearing so that tilapia can grow healthily and optimally. In this study, three different circulation systems were compared, namely a circulation system without a pump, a circulation system with one pump, and a circulation system with two pumps to increase the concentration of dissolved oxygen in the pond. The results of this study showed that CS III was able to maintain an efficient and stable DO concentration of around 7.5 to 8 ppm which also resulted in a stable pH value. Compared to CS I with a low DO concentration of about 3 ppm which impacted the pH value inefficiently. Also, CS II showed stable DO concentrations but decreased pH values. This shows that CS III can create more optimal environmental conditions for tilapia growth compared to other circulation systems. Furthermore, The consistent of DO concentration has an impact on other water quality parameters, namely pH, which is also consistent and stable, which is good for fish health.
Comparing the Behavior and Growth of Red and Black Tilapia in the Same Pond Anggi R. Margolang; Tulus I. Nasution; Hesti Wahyuningsih; Aprima A. Matondang; Winda Y. Yohana
Journal of Applied Geospatial Information Vol 8 No 1 (2024): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v8i1.7821

Abstract

This study compared the growth of red and black tilapia in a shared pond. It examined environmental factors, including temperature, pH levels, dissolved oxygen (DO), and total dissolved solids (TDS). The study employed a solitary water pump system to monitor fish growth and water quality over 36 days. Although there was a decline in dissolved oxygen (DO) levels on day 18, red tilapia exhibited accelerated growth and higher survival rates, suggesting enhanced environmental adaption compared to black tilapia. The feeding parameters were of utmost importance, and Prima Feed (PF 1000) performed a critical role by offering the ideal levels of protein (39-41%), fat (5%), fiber (6%), ash (16%), and water content (10%). Water quality assessments indicated varying dissolved oxygen (DO) levels, which were affected by temperature fluctuations caused by unpredictable weather conditions. Although the TDS range of 0.5-1.0 ppm was deemed suitable for tilapia cultivation, the total water quality remained suboptimal throughout the investigation. However, the findings indicated that red tilapia exhibited a greater growth rate than black tilapia under identical pond conditions. This can be related to the red tilapia's improved capacity to withstand fluctuations in temperature and retain a higher level of physiological stability. This study offers significant findings regarding the disparities in the two tilapia species' behavior, growth, and survival. These findings can be used to enhance pond management and maintenance procedures to achieve better outcomes in aquaculture.
Analysis of Mangrove Suitability for Ecotourism Development Based on Geographic Information System in Kemboja Village North Kayong Regency, West Kalimantan Nova, Nova; Raynaldo, Adityo; Saputra, Robin
Journal of Applied Geospatial Information Vol. 8 No. 2 (2024): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v8i2.8111

Abstract

Mangrove ecotourism has an important role in maintaining the balance of coastal ecosystems. Mangroves have various important benefits, such as in mitigating climate change with their ability to absorb carbon and protect coastal areas from abrasion. To improve tourism development, the Geographic Information System's ecotourism suitability analysis has become an important instrument. The purpose of this study is to explore mangrove types and the value of the Tourism Suitability Index. A Geographic Information System (GIS) and Tourism Suitability Index (TSI) approach was used to analyze parameter data, including mangrove density, species richness, mangrove thickness, tides and association biota. Results show that the dominant mangrove species are Xylocarpus granatum, Rhizopora mucronata, Rhizopora apiculata, and Bruguiera parviflora, with densities varying from 4 m²/ind to 23 m²/ind. Mangrove thickness varied from <50 to >500 meters, and biota association varied from 1 to 4 groups. The average tides vary in height, providing an important hydrological context. The land suitability analysis showed great mangrove ecotourism potential in Kemboja Village, with 2,532.20 hectares classified as highly suitable (46.07%) and 2,961.86 hectares classified as suitable (53.89%) for sustainable tourism development. Unsuitable areas cover 1.61 hectares (<1%).
Effect of Premna pubescens Ethanol Extract on Erythrocyte Count and Kidney Histology in Rattus norvegicus L Silaen, Srinatalia
Journal of Applied Geospatial Information Vol. 8 No. 2 (2024): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v8i2.8973

Abstract

Premna pubescens (wild leaves) has a rich history of traditional medicinal use, including as an anti-inflammatory, antioxidant, and anticancer agent. This study aimed to investigate the potential therapeutic effects of the ethanol extract of Premna pubescens leaves on erythrocyte count and kidney histology in Rattus norvegicus L. Twenty-four male Wistar rats were divided into four groups: control, ethanol extract of wild leaves, Sheep Red Blood Cell (SRBC) antigen, and combined ethanol extract with SRBC. The experiment involved administering wild leaf ethanol extract at 250 mg/kg BW for 30 days, followed by SRBC injection on days 8 and 15. Erythrocyte counts were measured, and kidney histological changes were observed.The results showed a significant increase in erythrocyte count in the A1 (7.42 ± 0.35 million cells/μl) and A3 groups (7.77 ± 0.23 million cells/μl) compared to the control group (7.05 ± 1.07 million cells/μl) and SRBC-treated rats (6.61 ± 0.18 million cells/μl). Histological analysis of the kidneys revealed clearer glomeruli and tubules, with reduced signs of inflammation and bleeding compared to the SRBC-treated group. These findings suggest that Premna pubescens extract has potential therapeutic effects on erythrocyte count and renal tissue, likely due to its antioxidant and anti-inflammatory properties. In conclusion, the ethanol extract of Premna pubescens shows promise in positively affecting erythrocyte count and mitigating kidney damage, demonstrating its potential as a therapeutic agent.

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